Sharp Kabushiki Kaisha Corporation

Kazuto Igarashi

Yoshihiro Tsukuda

Hidemi Mitsuyasu

Hiroshi Taniguchi

Tohru Nunoi

Koji Yoshida

Kozaburou Yano

Kozaburo Yano

Hokuto Yamatsugu

An inexpensive sheet with excellent evenness and a desired uniform thickness can be obtained by cooling a base having protrusions, dipping the surfaces of the protrusions of the cooled base into a melt material containing at least one of a metal material and a semiconductor material for crystal growth of the material on the surfaces of the protrusions. In addition, by rotating a roller having on its peripheral surface protrusions and a cooling portion for cooling said protrusions, the surfaces of the cooled protrusions can be dipped into a melt material containing at least one of a metal material and a semiconductor material for crystal growth of the material on the surfaces of the protrusions. Thus, a sheet with a desired uniform thickness can be obtained without slicing process.

Sheet manufacturing method, sheet, sheet manufacturing apparatus, and solar cell

A high-quality crystal sheet is provided. An apparatus for use in producing a crystal sheet includes a substrate having a main surface on which a crystal sheet is formed, a crucible holding a melt therein, a movable member holding the substrate to move it to bring its main surface into contact with the melt and then move the substrate away from the melt, and cooling means for cooling the movable member.

Method of producing a crystal sheet, apparatus for use in producing the same, and solar cell

An apparatus for producing a polycrystalline silicon sheet includes a crucible, a heating unit for heating a starting material of silicon fed in the crucible, and a cooling unit for contacting a melt of the starting material melted by heating to a cooling face of a cooling member, thereby obtaining a polycrystalline silicon sheet in which crystals of silicon are grown, wherein the cooling face of the cooling member has a sheet adhering portion for providing a silicon starting point of crystallization and allowing adhesion of the polycrystalline silicon sheet of grown crystals and a sheet stripping portion for allowing easy stripping of the polycrystalline silicon sheet.

Apparatus for producing polycrystalline silicon sheets and production method using the same

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Kitakatsuragi-gun, Japan

Kazuto Igarashi